body {
    background-color: #e9e9e9;
}

#piano {
    display: block;
    height: 110px;
    margin-bottom: 15px;
}

#note_screenshot {
    text-align: center;
}

#table_detail {
    margin-top: 5px;
    border: 3px solid #000;
    border-collapse: collapse;
    width: 656px;
}

#table_detail td {
    border: 1px solid #000;
    padding: 3px;
}

#about {
    border: 3px solid #000;
    padding: 3px;
    margin-top: 5px;
    display: inline-block;
}

.white-key {
    border: 1px solid #000;
    height: 100px;
    width: 30px;
    position: absolute;
    z-index: 1;
    display: flex;
    align-items: flex-end;
}

.white-key-text {
    font-size: 12px;
    margin: 0 auto;
}

.black-key {
    border: 1px solid #000;
    height: 60px;
    width: 19px;
    position: absolute;
    z-index: 2;
}

.use-wall {
    background: #090;
}

.black-use-1 {
    background: #666;
}

.black-use-2 {
    background: #444;
}

.black-use-3 {
    background: #222;
}

.black-use-4 {
    background: #000;
}

.white-use-1 {
    background: #e9e9e9;
}

.white-use-2 {
    background: #d0d0d0;
}

.white-use-3 {
    background: #b0b0b0;
}

.white-use-4 {
    background: #909090;
}

a.hide-a {
    text-decoration: none;
    color: #000;
}

.pressed-key {
    background: #f99 !important;
}

.bpm-input {
    width: 35px;
    background: #e9e9e9;
}

.bpm-table {
    border: 1px black solid;
    border-collapse: collapse;
    margin-top: 25px;
}

.bpm-table td {
    text-align: center;
    border: 1px black solid;
    padding: 2px;
}

.bpm-table thead td {
    font-weight: bold;
}
.bpm-table thead td.place {
    font-size: 1.5em;
}

.bpm-table tbody td.near1 {
    color: #e9e9e9;
    background: #33aa33;
    font-weight: bold;
}

.bpm-table tbody td.near2 {
    background: #99ee99;
}

.bpm-table tbody td.dis {
    width: 110px;
}

.bpm-table tbody td.bpm {
    width: 80px;
}